My apologies - I've just discovered that the previous post has been totally ballsed up by the website host, and about 75% of it is missing - what you can see is a very early stage of the draft. It's most annoying and I hate presenting you with incomplete stuff, even inadvertently. I'm working to try to have the situation resolved; if I can't I shall have to try to re-create the post from scratch...and/or get a different webhost.